Hey there everyone. What a great site you all have put together. I have done the Vortec swap into my 87 half ton 4X4 and yielded a powerful engine that will get 10 mpg on the highway. It has left me wanting more. I drive diesels every day in my 98 Chevy w/ 6.5 and my big truck w/ 400 Cummins and Versitile w/350 Cummins. Now I want a Cummins to just tear around with in my 87. I have read all the posts and it leaves me with mixed feelings. I have a 700R4 and would like to keep it. The motor mounts are the only thing that concerns me. How many out there have a 80 something with the 4BT swap?